Some things i found on the web about koike teppei ,very funny here they are
1-In the final contest of Junon superboy, he continued to play "Wadachi of Kobukuro when a guitar string had broken.
2-A string was once more broken and more technical problems (micro dropped) during his performance of "Boku no Kimochi" in NHK ko-haku Utagassen 2005. He continued to sing, however.
3-He often takes the stars in photos and show them to Wentz. But he never expect that reaction from Wentz.
4-He eats a lot even so he is thin
5-He snores a looooooooooooooooooooooooot
6-A lot of people have complained of him during training camp, synchronized swimming (for Water Boys 2)
7-Until 2007, he didn't know that women could have a beard.
8-During filming of Hava Rava, he told stories of a ghost that Wentz did not want to listen. But he saw something and had a fear too. He then grabbed Wentz and they were sleeping together in the same bed.
9-When he was child, he stopped going to Karate because he didn't want to hit the others and went home crying.
10-He cried with joy when he sang in the show "Music Station" for the first time.
* He cried before everyone at the end of the drama Gokusen 2.
* He was the only one who cried at the end of Water Boys 2 in his family.
*He was the only one crying at the ceremony of diplomas when he sang "Orange" SMAP.
* He wept when Wentz sang "I LOVE YOU" to Yutaka Ozaki for Karaoke